Lock nut



n. a.. PAssAuER. .1

LOCK NUT. APPLICATION FILEI? AUG8. I92|`- Patlmtd 0st. 249 11922.,

. WITNESS:

locking members.

Patented Zidi-9 i922.,

. noon nur.

. .application .tiled August 8, 11921. Serial No. 490,662,

To all fro/'tom may conce/ru s lie it known that l, liosnnr Lnellassannn, a citizen of the United. States, esiding at lis/iarble, inthe county ot Clarion and State of lijeni'isylVania,` have invented neuseful lmprovements in lioclr Nutsj of which the 'toliovvinpv is aspecification.

d s invention relates lto devices tor prevent] i nuts from becomingvloose on their' bolts, the general object et the invention beinol toprovide movable parts carried by the boit tor engaging notches in thenut for liolding` the nut against rotation, with means tor moving' thesaid movable parts into and out of operative position.

Another object of the invention is to provide the bolt with a borethrough which the operative means for the locking` members extend andwith which con'imunicate slots in the sides of `the bolt tor receivingthe This invention also consists in certain other 'features ofconstruction and in the `cmnbination and arrangement of the severalparts, to be hereinafter fully described, illustrated in theaccompanying drawings and specifically pointed out in the appendedclaims. y i i ln describing my invention in detail, reference will behad to the accouipanying,` drawings wherein like Vchareters denote likeor correspendingl parts throughout the several views, and in` which.Figure it is a longitudinal sectional View through a bolt and nutsupplied with my invention.

Figure 2 is a section on line 22 ot Figure l. i

lligure 3 is a detail view.

`ln these views i indicates the bolt which is provided with `the bore 2which `entends entirely through the stein and head oit the nut.liecesses are 'formed on the `head and these recesses communicate withthe bore. A transverse opening1 4t is formed in the screw-threaded Vpartof the nut and thisopeninp; communicates with the bore. The nut` isprovided with a plurality ot notches 6 in its outer. t'ace. it stem 7lits in the bore and a` pair oit locking; members 8 are pivotallysecured to the inner end oi said stem, these members being` adapted toen vthe vo pa rts oi the opening` t with their ends projecting throughsaid opening,` :tor enough e; the notches in the nut. The stem hasehandle part 9 rotatably secured and .Y

to its outer end by means of the slot and pin connection l0, said handlepart hai/'ing a head l1 which is adapted to engage the recesses 3 when.the parts are 'to be held in a position with the locking;- members inoperntive position and to be moved outwardly and given a quarter turn tohold it in this outward position when the locking members are to bemoved. into an inoperative position. A. coil spring' 12 has one endconnected with the inner end ot the stem i" and its other end connectedwith a cross pin 'i3 in the bore, this spring tending; to hold the stemand its handle member within the bore. A coil spring la, located in thebore. has one endrestingaogainst the locking members and its other endagainst the pin, this spring tendingto torce `the locking; membersthrough the two parts ot the opening when the stem and handle member arein their inner position. y

lt will thus be seen that by pulling the handle member outwardly andgiving; it a quarter turn the locking members will be pulled out ofi thetwo parts ot the opening and turned so that they `will engage a solidpart ot the wall 'ot the bore. By turning the part so that the head willengage the recesses 3 the springs will pull the stem and handle inwardlyand at the same time torce the locking members outwardly through theopening so that they will be ready to engage the notches in the nut.

i lt is thought from the foregoing;` description that the advantages andnovel features ot my invention will be readily apparent.

I desire it to be understood tha-J l may make changes in theconstruction. and in the (':oinbina-tion and arrangfgement oit theseveral parts7 provided that such changes tall within the scope oi theappended claims.

l. .in combination with a bolt having` a bore with a slot in its wallsand a nut, a movable member in said bore. spring means for holding` themember in its .inner position, a part on the movable member for holding`the same in its partly withdrawn position, a locking member on themovable member and spring` means for forcing the same through the slotto engage the nut when the movable member is in its inner position.

2. in combination with a bolt `and its nut,

said bolt having` a longitudinally extendingr here having` an enlargedpart 'in the head oi thel bolt and slots in its walis passing throughthe screw threaded part of the holt, a stein in the bore, a pair oflocking inemhers pivoted to the stem and adapted to pass through theslots for engaging the nuts, a 5 handlev part movably attached to thestem and having a head for engaging the enlarged part of the bore whenthe etem is in its inner position and for engaging the head of the boltto hold the stein in its outer position, a spring for holding the steinin its inner position and a spring engaging the looking members lorYforcing the Sanne through the slots.

ln testimony whereof l allix my signature.

ROBERT LEE PASSAUER.

